Điểm kiểm tra môn Toán của lớp 7B được ghi lại như sau:
Giá trị ( x ) | 2 | 3 | 5 | 6 | 7 | 8 | 10 | |
Tần số ( n ) | 3 | m | 8 | 7 | 2 | 9 | n | N=? |
Biết số trung bình cộng là 6 và m + n = 7. Tìm m và n ?
I. Read the descriptions. What are they? (1pt)
1. When it’s dark, this can help you to see. T __ __ __ __ 2. This subject teaches you about people who lived a long time ago. H __ __ __ __ __ __
3. You can buy a cup of drink and get something to eat here. C __ __ __
4. You wait here if you want to catch a train. S __ __ __ __ __ __ __
1. Passing the kitchen, he stopped to drink a large glass of water. (drink)
2. When the car broke down, she started ... ( put)
3. Here's the money I owe you. I meant ... (give)
4. To lose weight, I'd advise you ... (cut out)
5. 1 found that my back stopped ... when ... ( ache)
6. To help me get to sleep, I tried ... (think)
7. The orchestra was just beginning ... (play)
8. When he found that he couldn't walk he began........ (shout)
9. The handle came off when I tried ... ( lift)
cocacola